how to move bones with one bone move?
you can change the appearance of your bones to boxes called b-bones. 



with Ctrl Alt S you can change the thickness of the b-bone in edit mode. 
And If you want to make your bone see trough, go to your object properties and under Display, change the maximum draw type to wire 

   

And Bones can affect their parents with the bone constraint: Inverse Kinematic. 

Inverse Kinematic